This is the most complex script I have ever made so far, but why will it not work?

All it is supposed to do is move a part named "Brick" up from a set position a fews times...but it won't work lol, help.

local Brick = script.Parent
function MoverTest()
    game.Workspace.Brick.Position = Vector3.new(-100.5, 80, 231)
    wait(0.5)
    game.Workspace.Brick.Position = Vector3.new(-100.5, 90, 231)
    wait(0.5)
    game.Workspace.Brick.Position = Vector3.new(-100.5, 100, 231)
    wait(0.5)
    end